Electric heating – Heating devices – Tool or instrument
Patent
1985-04-15
1987-03-03
Bartis, Anthony
Electric heating
Heating devices
Tool or instrument
132 11R, 132 33R, 219240, 219242, 219354, 219358, 219518, H05B 102, A45D 236, A45D 412
Patent
active
046477551
ABSTRACT:
A portable hairsetter appliance for heating a single hair roller. The hairsetter comprises a cylindrical housing having an axially aligned and longitudinally extending high voltage electric resistance heating element encapsulated in a quartz envelope for heating a single hair roller inserted into the cylindrical housing. The weight of the roller closes an electrical circuit and the roller is heated to a predetermined temperature whereupon a thermoplastic bimetallic disc changes its concavity to open the electrical circuit. A safety means is provided to automatically open the electrical circuit if the roller is pressed into the housing with a force greater than its own weight.
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patent: 3519792 (1970-07-01), Solomon
patent: 3519793 (1970-07-01), Solomon
patent: 3892943 (1975-07-01), Van Droogenbroek
patent: 4101756 (1978-07-01), Yamano
Bartis Anthony
Clairol Incorporated
Warzecha Gene
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